<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>The answer is 'Yes'. Nothing magic about the Heathkit parts (with a very few exceptions). Just match the electrical characteristics (voltage and power rating being the two most important for a zener) and accommodate any physical differences as required and you should be fine.<br><br>Bob Groh<br>Heathkit Engineering: 1977 to 1981<br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> BRIAN CONRAD <beij1@msn.com><br><b><span style="font-weight: bold;">To:</span></b> heath@puck.nether.net<br><b><span style="font-weight: bold;">Sent:</span></b> Tue, February 15, 2011 6:07:22
PM<br><b><span style="font-weight: bold;">Subject:</span></b> [Heath] Zener replacement<br></font><br>
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I'm asking the group if anyone can tell me if it's OK to replace a Zener listed as a 1n4166a [52-25]<br>
with a standard zener rated the same. The 1n4166A is no longer made - it was used in a heath<br>
power supply in a positive and negative 15 volt 1 watt application. There are many newer ones that<br>
control 15 volts with 1watt. Can one of these be used as a direct replacement?<br>
Thanks for any help.<br>
Brian<br><br><br> <meta http-equiv="x-dns-prefetch-control" content="on"></div></div>
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